Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 29458 (McClellanville, SC)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Mcclellanville, SC (4 miles away).
- Average last spring frostMar 1750% chance of a 32°F freeze after this date
- Average first fall frostNov 2150% chance of a 32°F freeze by this date
- Growing season (frost-free)250 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
72°F 55°F or warmer
24-hour average · latest 67°F, as of Oct 18, 2:00 AM CDT
Measured at NOAA USCRN station McClellanville 7 NE, 8 mi away. Daily averages: Thu 75°, Fri 75°, Sat 72°.
4-inch depth
No soil station with a fresh reading within 62 miles.
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 29458 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring mid-February to early March; fall September to early October.
Fertilizer window
Lawn region: Southeast (warm, humid). Timing only; always follow the product label.
- Centipedegrass (warm-season): Spring: Not before mid-May (NC State); after full green-up (about May 2 here, using green-up about 3–4 weeks after your average last frost); Summer: Optional mid-summer feeding, especially on sandy coastal soils. Avoid: Early-spring feeding, frequent feeding and liming unless a soil test calls for it (centipede decline).
Plant now
- Arugula: fall sowing Sep 26–Oct 24
- Radish: fall sowing Oct 10–24
- Garlic: fall sowing Oct 10–Nov 7
- Shallot: fall sowing Oct 10–Nov 7
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 21: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Feb 25 |
| 50% (the "average" last frost) | Mar 17 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 4 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Nov 4 |
| 50% (the "average" first frost) | Nov 21 |
| 90% (late: most years have frozen by now) | Dec 12 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 31 | Nov 9 |
| 32°F (freeze) | Mar 17 | Nov 21 |
| 28°F (hard freeze) | Mar 2 | Dec 6 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 29458
Dates count from your average last spring frost (Mar 17) and first fall frost (Nov 21). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Jan 20–Feb 3 | Mar 24–Apr 7 (transplant) | Jul 25–Aug 22 (transplant) |
| Pepper (sweet and hot) | Jan 6–20 | Mar 31–Apr 14 (transplant) | Aug 1–22 (transplant) |
| Eggplant | Jan 6–20 | Mar 31–Apr 14 (transplant) | Aug 1–22 (transplant) |
| Tomatillo | Jan 20–Feb 3 | Mar 24–Apr 7 (transplant) | – |
| Lettuce | Jan 20–Feb 3 | Feb 24–Mar 17 (transplant) Feb 17–Mar 31 (sow outdoors) | Sep 26–Oct 17 (transplant) Sep 12–Oct 10 (sowing) |
| Spinach | – | Feb 3–24 (sow outdoors) | Sep 26–Oct 17 (sowing) |
| Kale | Jan 20–Feb 3 | Feb 17–Mar 3 (transplant) Feb 17–Mar 3 (sow outdoors) | Aug 29–Sep 26 (transplant) Aug 15–Sep 12 (sowing) |
| Collards | Jan 20–Feb 3 | Feb 17–Mar 17 (transplant) Feb 17–Mar 17 (sow outdoors) | Aug 29–Sep 26 (transplant) Aug 15–Sep 12 (sowing) |
| Broccoli | Jan 6–20 | Feb 17–Mar 3 (transplant) | Aug 15–Sep 12 (transplant) |
| Cabbage | Jan 6–20 | Feb 17–Mar 3 (transplant) | Aug 15–Sep 12 (transplant) |
| Cauliflower | Jan 6–20 | Mar 3–17 (transplant) | Aug 15–Sep 12 (transplant) |
| Brussels sprouts | Dec 23–Jan 6 | Feb 17–Mar 3 (transplant) | Aug 1–22 (transplant) |
| Kohlrabi | Jan 20–Feb 3 | Feb 17–Mar 3 (transplant) Feb 17–Mar 3 (sow outdoors) | Sep 12–26 (sowing) |
| Bok choy / Asian greens | – | Feb 17–Mar 3 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Arugula | – | Feb 17–Mar 17 (sow outdoors) | Sep 26–Oct 24 (sowing) |
| Mustard greens | – | Feb 17–Mar 10 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Swiss chard | Feb 3–17 | Mar 3–24 (transplant) Mar 3–31 (sow outdoors) | Sep 12–26 (sowing) |
| Beet | – | Feb 17–Mar 17 (sow outdoors) | Sep 12–26 (sowing) |
| Carrot | – | Feb 24–Mar 24 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Radish | – | Feb 10–Mar 24 (sow outdoors) | Oct 10–24 (sowing) |
| Turnip | – | Feb 17–Mar 10 (sow outdoors) | Sep 12–26 (sowing) |
| Parsnip | – | Feb 24–Mar 17 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 20–Feb 17 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Onion (bulbing) | Dec 23–Jan 6 | Feb 3–17 (transplant) | – |
| Green onion / scallion | – | Feb 3–Mar 3 (sow outdoors) | Sep 12–26 (sowing) |
| Leek | Dec 23–Jan 6 | Feb 17–Mar 3 (transplant) | – |
| Garlic | – | – | Oct 10–Nov 7 (sowing) |
| Shallot | – | Feb 3–17 (transplant) | Oct 10–Nov 7 (sowing) |
| Potato | – | Feb 17–Mar 3 (transplant) | Aug 1–15 (transplant) |
| Sweet potato | – | Apr 7–21 (transplant) | – |
| Sweet corn | – | Mar 24–Apr 7 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 24–Apr 7 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Bean, pole | – | Mar 24–Apr 7 (sow outdoors) | – |
| Lima bean | – | Mar 31–Apr 14 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 7–28 (sow outdoors) | – |
| Cucumber | Feb 17–24 | Mar 24–Apr 7 (transplant) Mar 24–Apr 7 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Summer squash / zucchini | Feb 17–24 | Mar 24–Apr 7 (transplant) Mar 24–Apr 7 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Winter squash | Feb 17–24 | Mar 24–Apr 7 (transplant) Mar 24–Apr 7 (sow outdoors) | – |
| Pumpkin | – | Mar 24–Apr 7 (sow outdoors) | – |
| Watermelon | Feb 17–24 | Mar 31–Apr 14 (transplant) Mar 31–Apr 14 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 17–24 | Mar 31–Apr 14 (transplant) Mar 31–Apr 14 (sow outdoors) | – |
| Okra | Feb 3–17 | Mar 31–Apr 14 (transplant) Mar 31–Apr 14 (sow outdoors) | – |
| Celery | Dec 23–Jan 6 | Mar 24–31 (transplant) | – |
| Basil | Feb 3–17 | Mar 24–Apr 7 (transplant) Mar 24–Apr 7 (sow outdoors) | – |
| Cilantro | – | Mar 3–31 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Parsley | Jan 6–20 | Mar 3–17 (transplant) Feb 24–Mar 17 (sow outdoors) | – |
| Dill | – | Mar 17–31 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Sunflower | – | Mar 17–31 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 17–Mar 3 (transplant) | – |
| Rhubarb (crowns) | – | Feb 17–Mar 3 (transplant) | – |
| Strawberry (plants) | – | Feb 17–Mar 3 (transplant) | Sep 12–Oct 10 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Mcclellanville, SC (NOAA GHCN-Daily ID USC00385628), elevation 12 ft, 3.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mcclellanville 7 NE, SC | 7 mi | Feb 28 | Dec 1 |
| Georgetown Co AP, SC | 17 mi | Mar 12 | Nov 24 |
| Jamestown, SC | 17 mi | Mar 22 | Nov 13 |
The average last-frost dates of these stations span 25 days, a rough guide to local variation. See data sources & methods.
Frost questions for 29458
When is the last frost in 29458?
The average (50% chance) last spring freeze of 32°F for ZIP 29458 is March 17. For a more cautious planting date, use April 4, when only 1 year in 10 still sees a later freeze.
When is the first frost in 29458?
The average first fall freeze is November 21. In 1 year in 10 it comes by November 4.
What hardiness zone is 29458?
ZIP 29458 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 29458 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
29453 Jamestown 29429 Awendaw 29450 29440 Georgetown 29434 29466 Mount Pleasant 29510 Andrews 29431 Bonneau
Other ZIP codes in Charleston County
29401 29403 29404 29405 29406 29407 29409 29412 29414 29418 29424 29425 29426 29429 29438 29439 29449 29451 29455 29456 29464 29466 29470 29482 All Charleston County frost dates · South Carolina frost dates
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.